The Salvagnini P4 panel bender, which was introduced in 1977, revolutionized the industry with its flexible, automated sheet metal forming technology. Since then, Salvagnini has continued to innovate with models like the P1 Lean panel bender (the smallest in the family with a large forming length of 1250mm and an average power consumption of only 3 kWh per hour) and the P2L-21 compact panel bender (used in the commercial kitchen industry with a forming length of 2180mm and an average power consumption as low as 5 kWh per hour).
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While the high one-time investment cost may deter some sheet metal processing users, the efficiency and intelligence of panel benders make them a revolutionary alternative to traditional press bending machines. With their highly intelligent operating control system, panel benders can efficiently bend different workpieces, making them ideal for companies looking to automate and improve their production processes.
Panel bender history
In Europe and the United States, companies often face a higher proportion of human resources costs. Especially in Northern Europe, the vast majority of companies are eager to address the high cost of labor.
Therefore, European and American enterprises have long prioritized “improving production efficiency and reducing manpower” and have launched a series of automatic and intelligent initiatives. More companies are beginning to consider purchasing smarter equipment and even embracing automated, unmanned production lines.
It has been 40 years since Salvagnini introduced the world’s first P4 panel bender in 1977. The Salvagnini P4 panel bender’s revolutionary universal bending tools and robots introduced flexible, automated sheet metal forming technologynbsp;to the industry in the late 1970s.
salvagnini panel bender
P1 Lean panel benders
The P1 Lean panel bender (Fig. 1) is the smallest model in the family of Salvagnini Panel Benders, with a large forming length of 1250mm, full servo drive, fast speed, and an average power consumption of only 3 kWh per hour.
The small size of the machine allows for the production of small parts, making it very cost-effective.
P2L-21 compact panel bender
The P2L-21 Compact panel bender (Fig.2) is the main machine used in the commercial kitchen industry, with a forming length of 2180mm.
The new generation P2L adopts servo motor direct drive, which can meet most of the processing requirements of panel products, covering an area of 6m×3m. The cylinder hybrid drive ensures the long-term stability of the equipment and reduces the maintenance workload, with an average power consumption as low as 5 kWh per hour.
P4-2116 HPT standard panel bender
The P4-2116 HPT is a standard panel bender with semi-automatic loading and unloading (Figure 3), which can be used during machine production. The loading and unloading operations can be carried out without interrupting production, resulting in a significant increase in machine availability.
As a standard panel bender, the P4 can be loaded with additional options to expand production capacity, making it the ideal machine for several major refrigerator manufacturers.
S4+P4 flexible manufacturing system
S4+P4 FMS can accommodate the production of more variety and smaller quantities of products that are not yet available.
What is a panel bender?
Previously, panel forming was done on dedicated production lines or manually operated pressure-bending machines. Panel benders have natural advantages over press brake machines for panel processing, including labor-saving and speed, as well as good repeatability and consistency of the workpiece.
With the arrival of the Salvagnini panel bender, sheet metal forming has entered the era of complete automation for the first time.
There are three main types of conventional sheet metal bending and forming:
- manual bending
- semi-automatic bending
- robot cell bending
However, despite the increasing level of automation, the efficiency bottleneck has not been eliminated.
In a panel bender, there is no need to change the die, the working stroke is short, the feeding is fast, and only one operator is needed to “put in” and “take out” the sheet.
A single machine can smoothly complete the positioning of the sheet in a single pass for four-sided bending… order, efficiency, and intelligence can be so simple.
The combined efficiency of the panel bender is 3 to 4 times that of a manually operated bending machine.
Panel benders can meet all user bending needs with their lean, fast, and energy-efficient capabilities.
The highly intelligent operating control system enables efficient bending of different workpieces, making the panel bender a revolutionary alternative to traditional press bending machines.
However, due to the high one-time investment cost, it has not been widely adopted by the majority of sheet metal processing users.
Working principle of panel bender
The panel bender has a new design concept, which involves downward bending with the upper knife and upward bending with the lower knife, with no limit on the number of bending times.
Bending forces are distributed transversely and generated by oscillating components, namely the bending knives.
The binding reaction force is generated by two components that are strongly locked to the sheet.
Downward bending (negative bending)
Upward bending (positive bending)
The bending length can be adjusted automatically, making it easy to realize unmanned production, which is shown schematically in Figure 8.
Panel bender’s structure
The panel bender uses a universal, adjustable tooling with upper and lower bending knives, eliminating the need for a large number of bending tools based on the shape and size of the workpiece. This significantly reduces the cost and manufacturing time of molds and tools, as well as the preparation time of upper and lower molds and tools.
It also reduces the mold and tool stock, which facilitates production management. Furthermore, the absence of the need to design and manufacture special molds and tools for each product reduces the development cycle of new products, improving the competitiveness of enterprises in today’s increasingly competitive market.
2. Fast and efficient automatic mold adjustment systems
When folding box-shaped parts, you need to adjust the length of the mold according to the length of the inner edge of the workpiece. There are three methods of adjustment.
The first one is manual adjustment and takes 3 minutes.
The second type is semi-automatic adjustment and takes 90 seconds.
The third type is Automatic Adjustment (ALA), which coincides with the other work steps, so no adjustment time is required.
3. A simple and logical method of 1-time positioning
Before bending, positioning is carried out by the two cutting corners of the sheet instead of the edges of the sheet, which completely avoids the positioning error caused by the shearing of the sheet and improves positioning accuracy.
The sheet only needs to be positioned once in the process of panel bending, avoiding the cumulative error caused by repeated positioning of the sheet.
This greatly improves the final accuracy of the finished product.
4. High precision and multifunctional robots
The manipulator can move the sheet forward and backward, as well as make discontinuous rotations of 90°, 180°, or 270° during multilateral bending. When the user needs a special angle of rotation, it can also be equipped with a CNC rotary device.
As shown in Figure 3, the panel bender clamps the workpiece with a rotating manipulator, which then clamps the workpiece to the upper and lower presses of the sheet. Between the upper and lower bending knives, the upper and lower bending knives act on the part of the sheet to be bent, making the necessary movements to obtain the bend angle and radius of the arc required by the program.
When one side is bent, the robot automatically rotates the sheet 180° so that the opposite side is bent, followed by the other two sides. When all four sides of the sheet have been bent, the manipulator exits. The panel is released and can be removed by the operator.
If equipped with an automatic loading and unloading system, the panel bending machine can also automatically bend the sheet placed in the designated location, which is after punching and shearing. After the bending is completed, the workpieces will be automatically taken down and stacked neatly. This can realize the automation of the bending process, reduce the labor intensity of the workers, and also avoid the quality accidents that occur due to workers.
The accuracy of the bending parts largely depends on the movement of the manipulator. Therefore, the manipulator of the panel bender has a high degree of positioning accuracy to ensure the accuracy of the bending parts.
5. Advanced CNC system
The CNC systems of panel benders are based on Windows NT, with a user-friendly interface and an intuitive, easy-to-use human-machine dialogue. They offer powerful simulation, intervention, and documentation functions, as well as self-diagnosis and remote service functions.
In addition to providing fault codes, they can also be displayed graphically. The remote service function allows software engineers to access the customer’s control system remotely and intervene, diagnose, or modify programs. In most cases, the system can be returned to normal operation, eliminating the need for a repair service visit, or basic normal operation can be maintained until a service technician arrives.
6. Variety of configurations
To meet the requirements of different users and products, panel benders are available in a variety of models and configurations. For example:
a) They can be manually loaded or unloaded.
b) They can be equipped with an automatic loading and unloading system, allowing for unmanned operation.
c) They can be connected with the punching and shearing system, to become a punching, shearing, and folding integrated FMS (flexible manufacturing system).
7. Advantages of the panel bender
Advantages:
(1) There is no need to change molds, upper and lower tools, which saves running costs, manufacturing costs, and management costs, and greatly improves production efficiency.
(2) Due to the advanced design structure and dynamic compensation of the bending knife, it has very good bending accuracy. Its angular accuracy is ±0.5°, and the parallelism of the two opposite sides after bending is ±0.1mm/m.
(3) Since its bending mechanism is different from other similar machines, it can perform bending processes that other bending centers cannot do. Therefore, it can greatly simplify and rationalize product structure. For example, a box-shaped part that originally required 8 plates to bend after welding can be made from 1 plate using P4 panel bender, thus reducing the weight of parts and processing time. It also reduces product design time, manufacturing costs, and improves product market competitiveness.
(4) It has the function of bending from the bottom to the top, which can avoid the indentation phenomenon that occurs when bending some workpieces with very high surface requirements (such as mirror stainless steel) and long lengths, and when the two ends are machined, greatly improving the appearance of the bent workpiece.
(5) In the machining process, the sheet feed and rotation are continuous and automatic, so its machining time is much shorter than other bending centers, especially for folding box-shaped parts, greatly improving efficiency.
(6) It has strong software functions for the automatic adjustment of the sheet compactor and the automatic generation of the bending program, thus reducing the preparation time considerably.
(7) It is extremely advantageous not only for small-batch production of many varieties but also for mass production of a single piece, and is suitable for production applications in sheet metal processing enterprises.
Pander bender features
Panel benders are characterized by the following:
(1) For companies whose parts require foam processing (such as refrigerators, rice steamers, etc.), the consistency of the parts provided eliminates the need to clean up leaks, resulting in significant improvements in processing efficiency and product quality.
(2) By using the corner-cut positioning method, it is possible to maintain the exact size of the exterior reference surface and ensure a high degree of consistency of the exterior part.
High accuracy can be maintained even if the sheet edge straightness deviates after unloading.
For workpieces with limited working envelopes that need to be refolded with a conventional bending machine, the size of the workpieces remains under control due to the exact outside dimensions.
Fig.10 Comparison of positioning methods
(3) For thin stainless steel plates (0.8mm thickness or less), manual bending can result in inconsistent offset bending due to operators prioritizing efficiency and synchronization.
The panel bender does not require lifting the plate during the bending process for larger panels, which eliminates the issue of offset bending caused by the plate not being lifted into place.
Compared to a press brake machine, the panel bender greatly improves surface quality and production efficiency, with an average increase of over 40%.
(4) The highly flexible processing capabilities of the panel bender allow for small batch and multi-mix production.
The unique ABA technology of the panel bender enables quick press length adjustments, even during robot edge changes.
As a result, it only takes an extra 2 to 3 seconds to complete the process of folding the long edge first and then the short edge (short wrap long).
The panel bender is also capable of processing products that require frequent press length adjustments.
(5) The panel bender offers advanced technology to develop new products and can complete most processes that are not possible with a press brake machine.
Compared to conventional bending machines, the panel bender has a relatively powerful processing capacity.
For example, Figure 11 illustrates the contoured shape of a refrigerator door handle developed for a customer.
Two different shapes were designed for the customer to choose and evaluate.
Previously, the customer was producing a similar product on an assembly line with five press brake machines and no quality control.
By using the P4 panel bender, the product’s quality was controlled, and the processing time was reduced to one minute.
Figure 11 Refrigerator door handle contouring
(6) The panel bender offers a wide range of bending tools for customers to choose from, and it is recommended that the thin red circle type bending tool be used for thin plates in general.
The configuration of the panel bender can be targeted to meet specific professional requirements.
Figure 12 Bending tool selection
(7) Industries that heavily utilize “201” chrome manganese series stainless steel often encounter difficulties due to the material’s high hardness and bending rebound.
Panel benders with new material property compensation technology as a standard feature have significantly improved product processability and first-piece success rates.
(8) Panel benders are available in various configurations based on customer requirements and investment size.
Panel bender applications
The panel bender is suitable for producing professional kitchenware for the catering and food industry, as well as ovens, cooking systems, cleaning systems (such as dishwashers and glassware washers), refrigerators, instant freezers, refrigerator counters and freezers, stainless steel furniture, and air handling systems (such as extractor hoods and exhaust fans).
Additionally, it is suitable for bending electrical industry cabinets, elevators, and lifts.
Panel Bender vs. Press Brake
Simplification of bending processes
In , the handling of a panel often requires more than one person, and it becomes difficult for one person to handle a panel longer than 1500mm, as it moves during the bending process.
In the panel bender, the handling of the panel concerns only its loading on the working table, its rotation on the sides to bend, and the unloading of the final product.
The operator only needs to load the metal sheet to be bent and unload the final product.
In the case of an advanced panel bender, the operator only unloads the final product.
Furthermore, traditional bending systems require the operator to memorize the bend sequence to execute.
In the semi-automatic panel bender, the operator only needs to turn the panel into the position that the machine requires.
Handling of a panel with the pess-brakes
Overturning of the panel on the ball table of a panel-bender
Reduction of labor costs
Press brakes require skilled laborers with specific experience and the ability to follow and control the bending stages.
The panel bender can be operated by only one person without any specific skills: the machine automatically executes all the bending stages.
This can lead to reduced personnel costs (hiring unqualified personnel) and higher production flexibility (multiple people can use the machine).
Panel benders are suitable for the following product areas
For the stainless steel industry, the company manufactures or supplies the following types of products: ovens, cooking systems (stoves, grills, etc.), cleaning systems (dishwashers, cup washers, etc.), refrigerators, flash freezers, stainless steel furniture, air handling systems, electrical equipment and accessories, elevators, and more.
For other metal sheets, the company manufactures and supplies the following types of products: elevators, freight elevator products, painted cabinets, security doors, engineered doors (fireproof partitions, etc.), inside or outside covers, and more.
Who needs the panel bender?
- Enterprises mainly engaged in the production of stainless steel products.
- Product quality-oriented enterprises
- The products are small-batch or custom-made.
- Companies whose products are concentrated in the production and processing of press brake
- Enterprises whose products have complex processing processes
Final Thoughts
Panel bender is an advanced and modern bending machine that completely separates the quality of the product from the skill level of the workers, ensuring the production of high-quality products.
At the same time, the panel bender greatly reduces the labor intensity of the workers. Additionally, it provides sub-engineers with new design ideas and has significant advantages for the development of new products, giving the enterprise a head start in the ever-changing product market.
Source: www.machinemfg.com
In today’s manufacturing landscape, bending machines are indispensable tools, shaping raw materials into precise forms with unmatched efficiency. From crafting angular designs into sheet metal to curving robust steel tubes, these machines are the backbone of countless industries, including automotive, construction, HVAC and more.
However, finding the right bending for your business can be a challenging process.
This article simplifies the basics of metal bending machines and compares their various types, applications, and benefits.
What are Bending Machines?
Bending machines are metal processing tools that bend, shape, and curve parts at various angles. The bending process is a cold working technique that gently stretches the metal to the desired angle. Occasionally, some machine oil or lubricant is required to help reduce the resistance between the workpiece and the die press.
The key to a high-quality bending machine is the even distribution of pressure along the surface of the metal workpiece. Equal and consistent force reduces the risk of metal fatigue and accidental fracture.
Bending machines have near-universal metal compatibility. They can bend everything from soft metals like copper and aluminum to tough ones like stainless steel and titanium.
Contact us to discuss your requirements of stainless steel panel bender. Our experienced sales team can help you identify the options that best suit your needs.
How Does a Bending Machine Work?
The machine type primarily determines the basic working principle of a bending machine. Press brake-type bending machines use a punch-and-die approach to shape sheet metal. Contrarily, a pipe-bending machine uses a set of two to three spinning rollers that stretch and bend the pipe.
Later, as we get into the details of the different bending machines, we will see that the general principle remains the same. To initiate the bend, the metal workpiece needs two controlled opposing forces at a concentrated point.
We discuss the various metals being processed in more detail later in the article.
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Different Types of Bending Machines
Whether it’s small pipes, large tubes, rebar, thick metal plates, or regular sheet metal, a bending machine is available for all applications.
Each bending machine has specific functions that cater to the various metal fabrication processes.
1. Pipe Bending Machine (Tube Bending)
A pipe bending machine is designed to bend cylindrical shapes so that the pipe’s internal diameter remains consistent throughout its entire length. Although such machinery is commonly called a pipe bending machine, it can bend other tube shapes like rectangular or square tubes, solid rods, or metal channels.
Parameters
Pipe bender parameters vary from machine to machine. Most industrial machines have the following parameters.
- Outer Diameter Range – 0.5 inches to 72 inches
- Bending Radius – 1.5D – 20D (D=Diameter)
- Max Bending Angle – 270°
- MAX Wall Thickness – 5 inches
Types of Pipe Bending Machines
Pipe bending machine work can be categorized into a few types based on manual or automatic configurations and their different feature sets. There are four basic types of pipe-bending machines.
- Rotary Draw Bending Machine (Stretch Bending)
- Compression Bending Machine
- Ram Bending Machine
- Roller Bending Machine
Process
- A rotary draw pipe bender machine clamps the metal tube along a circular bending die. A lever pulls the tube along the die, curving it in the process. This technique best suits small to medium-diameter pipes, tubes, and rods.
- A compression pipe bender uses compressive force to shape the metal tube. It has two sideways pressure pistons that press the front and back of the tube against a circular bending die. Compression bending is preferred for its ability to bend large pipes with ease.
- A ram pipe bender is the opposite of compression bending. It uses a ram to apply pressure to the center of the bend point instead of applying force to the pipe’s surrounding area. This technique can bend pipes at sharper angles.
- The roller pipe bender tool involves three or more rollers that spin in opposite directions. As the metal pipes move through the machine, the rollers slowly bend them to one side. The distance between the rollers helps determine the angle of the bend. Repeated passes through the machine are recommended for the highest quality bends, with each pass increasing the bending angle.Roller pipe bender machines yield the most smooth and consistent bends. These are also the only machines capable of bending a pipe along an even circular path. The other pipe bending tools are better suited to quick applications and multiple bends.
A pipe bending machine is used in several professional industries. Bending pipes is always challenging as the inner side of the bend can easily collapse and crimple.
- Construction
- Shipbuilding
- Furniture and Architecture
- Handrail Manufacturing
- HVAC Tubing
- Plumbing & Pipe Fittings
- Manufacturing Exhaust Pipes
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2. Plate Rolling Machine
A plate roll bending machine is an industrial tool designed to curve large metal plates into a cylindrical or semi-cylindrical path. Even entry-level plate rollers are usually the size of a truck and are either fully or semi-automatic.
A standard industrial plate rolling machine can cold roll up to 3-inch thick metal plates. The same machine can even bend 4-inch thick plates using hot rolling.
Parameters
Here are some common operation parameters of plate rolling machines.
- Workpiece length – 12ft. 144 inches.
- Workpiece Width – As Per Roller Length
- Workpiece Thickness – 3 inches (Cold Rolling) or 4 inches (Hot Rolling)
- Maximum Rolling Diameter – 12 ft.
Process
The general design of a plate rolling machine remains consistent across various models. It uses a three-roller system arranged in a pyramid shape. The top roller applies downward force, and the bottom two rollers apply counter-reaction, keeping the metal plate securely clamped in the middle.
Powerful motor control systems monitor and adjust the distance between the top and bottom rollers. Like pipe bending machines, multiple passes through the machine are required for sharper bends.
Applications
- Petrochemical and Oil & Gas – Containment Tanks
- Aerospace and Aviation – Rocket Exterior
- Automotive and Transportation – Tank Truck
- Mining and Heavy Equipment – Underwater Piping
- Shipbuilding and Marine Industry
- Construction and Architecture
3. Sheet Metal Bending Machine
A sheet metal bending machine is a powerful tool for shaping flat metal sheets into complex shapes and structures. These bending tools can bend, curve, and fold metals at various angles for a sharp, angular, or rounded finish.
Sheet metal bending is always used in conjunction with a metal cutting technique. For example, fiber laser cutting machines are used to cut out the basic shape, and bending machines are used to shape it into a 3D design.
Similar to pipe rolling, several types of sheet metal bending techniques exist.
- Punch and Die Bending Process
- Single Die Beading Process
- Two Die Shaping Process
- Roller Bending Process
Parameters
- Sheet Thickness Range – 0.08 to 0.24 inches
- Max Sheet Length – Machine Size Dependent
- Max Sheet Width – Machine Size Dependent
Process
- In punch and die sheet metal bending, the metal sheet is squished between a powerful piston and two counter supports (die) to create bends.
- Single-die beading involves pushing the metal sheet into a circular cavity die, shaping the sharp edge of the metal sheet into a rounded edge.
- Two-die shaping involves sandwiching a metal sheet between a positive and negative die. The upper and lower dies mirror one another and fit together perfectly when closed.
- Roller bending sheet metal involves three rollers that curve metal sheets. Sheet metal rollers are smaller than plate rolling machines.
Applications
- Electronic Enclosure Manufacturing
- Automotive Body Panels
- Metal Hemming
- Refrigerators
- Brackets
- Various Industrial Applications.
Heming is the process of reinforcing metal edges and hiding the burs.
4. Press Brake Machine
Press brake machines are specialized industrial metal plate and sheet fabrication tools. They utilize a punch-and-die approach to bending and have robust brakes that stop the punch from fully making contact with the die underneath.
A press brake bending machine can output incredible downward force, allowing for thick metal plate processing. It also supports different braking systems that have their own advantages.
- Hydraulic Brakes
- Electric Brakes
- Hybrid Electric Brakes
- Syncro Brakes
- Nut-Stop Brakes
Electric brakes are the highest-performing option and are generally preferred for their near-silent operation.
Parameters
- Sheet Thickness Range – 0.24 to 0.80 inches
- Max Sheet Length – Machine Size Dependent
- Max Sheet Width – Machine Size Dependent
Process
A matching punch and die set is attached to the press brake machine. Bending instructions are fed to a computer system that determines the punch’s compressive force and braking point.
Press brake machines come with a diverse range of punch and die tools that determine the bend’s angle, shape, and finish.
Applications
Press brake machines are used in various industries for different metal-forming applications.
- Heavy Machinery
- Construction
- Automotive
- Ship Building
- Oil and Gas
- etc.
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5. Mechanical Bending Machine
Mechanical bending refers to the use of motors, wheels, gears, or levers to initiate a compressive or tensile force on the metal workpiece. These metal bending machines can have automatic or manual operation modes.
Pipe bending and plate rolling machines are two popular examples of mechanical bending.
Mechanical bending machines have excellent accuracy and produce more consistent and sharp bends. They are primarily used for complex and intricate fabrication work.
Process
The process specifics will vary depending on the machine model and bending technique. However, the core principles remain the same.
- Manual bending machines use levers, pulleys, or gear trains to increase the efficacy of the applied force.
- Automatic bending machines use motors and mechanical actuators to apply force on the metal piece.
Applications
- Construction
- Automotive
- Plumbing
- HVAC Ducting
- Electronic Enclosures
- etc.
6. Hydraulic Bending Machine
Hydraulics is the science of using liquids to generate and transfer force. A hydraulic bending machine is more powerful and supports thicker metal plates than any mechanical option. Hydraulics are also more reliable than motors and gear trains.
Die and punch-type bending machines can have either mechanical or hydraulic actuation sources. Press Brake machine manufacturers often offer both options for the same model.
A hydraulic bending machine has more power than a mechanical one but less overall accuracy. It has a uniform force distribution, so the bend for a larger workpiece remains consistent across its length. Hydraulic machines are best suited to high-volume production runs.
Process
A piston applies a small downward force on a hydraulic cylinder, which pushes the liquid into a larger container. Hydraulic pressure is directly related to surface area. So, when the liquid enters the larger container with a higher surface area, the initial force multiplies according to the surface ratio of the two containers.
Some bending machines use a hybrid design, where the rollers are mechanically driven, but a hydraulic control system maintains the distance between the rollers.
Applications
- Aerospace and Aviation
- Automotive and Transportation
- Mining and Heavy Equipment
- Shipbuilding and Marine Industry
- Construction and Architecture
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Applicable Materials for Bending Machines
Bending machines can process most metal materials with ease. Softer metals, in particular, are no problem. The material choices remain consistent whether you’re looking for a metal plate, sheet metal, or pipe bending machine.
- Iron
- Carbon Steel
- Stainless Steel
- Copper
- Aluminum
- Brass
- Titanium
Avoid particularly tough and brittle materials like heat-treated and hardened steel plates. For pipe bending machine material, wall thickness is more important than metal type. Softer metals will collapse more easily when bending pipes.
Additionally, always check the manufacturer-provided manual for the fine details.
7 Factors to Consider When Buying a Metal Bending Machine
A metal bending machine is a big investment. Choosing one that fits your business needs and makes the most out of your budget can be challenging.
So here are seven factors that are sure to make your job easier.
1. Bending Application (Metal Shape)
Outline the types of metals and shapes you’ll primarily be using: metal sheets, pipes, rebar, plates, channels, etc. If you need accurate and precise bends for those high-performance applications, consider automatic machines (CNC systems).
2. Machine Capacity
Evaluate the machine’s bending capacity in terms of thickness and length of the metal and its maximum bend diameter in case of plate rolling. Ensure it meets your current and potential future project requirements.
Larger machines are considerably more expensive due to their increased size, power, and manufacturing complexity.
3. Bending Accuracy
Bending accuracy refers to a bending tool’s ability to make bends accurately to meet your needs. Poor bending accuracy means a 90° bent pipe will have an error of one or two degrees. Look for machines with features like digital readouts, angle presets, or CNC capabilities for precise bending.
4. Ease of Use
Consider the user-friendliness of the machine, especially if you’re not highly experienced with metalworking. Features like intuitive controls, quick setup, and ergonomic design can enhance productivity and reduce errors.
5. Warranty Specifics
Review the warranty documentation provided by the manufacturer. Ensure it includes essential components and addresses common issues that may arise during regular use. A comprehensive warranty can offer peace of mind and protect your investment.
Also, ask the bending tool supplier or manufacturer about their policy on accidental damage during shipping.
6. Shipping Costs
Factor in shipping expenses, especially if you purchase the machine from an overseas location. International shipping costs are all over the place. Compare shipping options and consider any additional fees associated with delivery to determine the total cost.
7. After-Sales Services
Evaluate the manufacturer’s reputation for after-sales support and customer service. This includes technical assistance, spare parts availability, and maintenance services. Reliable after-sales support can minimize downtime and extend the lifespan of your machine.
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How to Maintain the Bending Machine?
Timely cleaning and equipment maintenance are necessary for the longevity of your machine. Here are a few simple steps you can take to keep your pipe bending machine in pristine condition.
1. Stay within the Operating Parameters
A pipe bender is designed to deal with small-diameter items. Trying to bend pipes that exceed the machine’s parameters will lead to premature wear and potentially cause serious damage.
2. Regularly Oil Your Machine
Lubrication is critical for reducing friction and preventing wear on moving parts. Follow the manufacturer’s recommendations for lubricating the machine’s components, including the bending mechanism, punch piston, rollers, and hydraulic system.
3. Keep Your Bending Machine Clean
Over time, dust and small metal bits can accumulate inside your machine. This problem accelerates when working on a factory floor with many other metal processing equipment like metal sheet & tube-integrated laser cutting machines. Use compressed air or a vacuum to remove larger bits and wipe down surfaces with a damp cloth for dust.
Keeping the machine clean also prevents corrosion and ensures smooth operation.
4. Check for Tool Wear
Inspect the bending tools, such as dies, punches, and mandrels, for signs of wear or damage. Replace worn-out or damaged tools promptly to maintain bending accuracy and prevent defects in the finished parts.
5. Inspect Hydraulic System
An optional maintenance factor is hydraulic system upkeep. If your bending machine is hydraulic-driven, regularly inspect the hydraulic system for leaks, damaged hoses, or worn seals. Check hydraulic fluid levels and condition, and replace or top up fluid as necessary.
Conclusion
Metal bending tools play a big part in our modern manufacturing industries. The traditional method of hammer curving parts was time-consuming and yielded poor results. Modern bending methods, like hydraulic bending and pipe rolling, have proven themselves time and time again. Pipe bending, in particular, is a necessary element for plumbing work.
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